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gpt-image-2-all does not need its own skill. It shares the single gpt-image-2 series skill with gpt-image-2 (official) and gpt-image-2-vip — all three use the same OpenAI Images API; only --model differs. For the full install, SKILL.md, and script, see GPT-Image-2 Series Agent Skill.

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What this model is good for

Fastest

Reverse ChatGPT line, ~30–60s — the fastest of the three channels.

Cheapest

Flat $0.03/image regardless of size/quality — great for volume.

T2I / fusion

Text-to-image and up to 16-image fusion (no mask inpainting).

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How to use it in the skill

After installing the gpt-image-2 series skill, set --model to gpt-image-2-all: 
python3 gpt-image-2/scripts/gpt_image.py "Flat-illustration festival poster, portrait 2:3" -o poster.png --model gpt-image-2-all
To make it the default channel (no --model each time), add a line to gpt-image-2/.env: 
APIYI_IMAGE_MODEL=gpt-image-2-all
Red lines: gpt-image-2-all does not accept size / quality / n —
  • put size/ratio in the prompt (e.g. “portrait 2:3”, “16:9 banner”); a passed size is ignored or errors;
  • passing n>1 still returns only 1 image but bills per count.
The skill script already omits size/quality/n for this model, so normal use of --model gpt-image-2-all is safe; only watch out if you hand-craft requests outside the script. For locked size/4K use gpt-image-2-vip; for quality tiers / mask use official gpt-image-2.